The Green Bank Observatory is aware that the AstrID Balance() command is failing for observations using the Prime Focus 800 MHz receiver. As a workaround we recommend to you use the following commands in your AstrID scripts: Source

The noise diodes for PF800 are known to be incorrect. Until the issue can be resolved, all observers should perform an observation of a known calibrator. This will allow your data to be corrected. Please contact your project friend if you need assistance. Source

The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) is pleased to announce the appointment of Dr. Anthony Remijan as Director of the Green Bank Observatory (NSF GBO). Remijan is a distinguished astrophysicist and scientific leader who has played a pivotal role in advancing molecular astrophysics and radio astronomy throughout his more than […] Source

Happy Thanksgiving! The Science Center and Café will be closed Tuesday-Friday. Normal hours resume Saturday Source

Special Call for GBT 25B-26A Filler Time Proposals The Green Bank Observatory (GBO) invites the scientific community to submit Special Call proposals for filler-time observations on the Green Bank Telescope (GBT) during the 25B and 26A semesters. Approved projects will be conducted through July 31, 2026. Submission Deadline:Friday, November 28, 2025, at 22:00 UTC (17:00 Eastern Time) Proposal Guidelines Submission Instructions All proposals must […] Source

Due to staff illness, the Starlight Café will be closed all day on Thursday, November 6th. We may need to close Friday as well. Pre-packaged snacks and bottled drinks will still be available at the Front Desk in the Science Center, and lunch is available at our Cafeteria from 11:00-2:00. Thank you for your understanding. Source

We have released a change in the behavior of the balance() command on the GBT. NOTE, The balance command: Source

After 1,400+ hours on the NSF Green Bank Telescope, scientists unveil the largest, most sensitive dataset of molecules from deep space’s TMC-1 cloud A groundbreaking new dataset from the U.S. National Science Foundation Green Bank Telescope (NSF GBT) is now publicly available, opening the door for scientists worldwide to make discoveries in one of the […] Source

New research exposes CO-dark molecular gas, previously invisible to telescopes, uncovering the hidden building blocks of our Galaxy An international team of astronomers has created the first-ever large-scale maps of a mysterious form of matter, known as CO-dark molecular gas, in one of our Milky Way Galaxy’s most active star-forming neighborhoods, Cygnus X. Their findings, […] Source

Astronomers use newly deployed telescopes and deep-space imaging to challenge long-held assumptions about what causes these mysterious cosmic signals An international team of astronomers have observed one of the brightest fast radio bursts (FRBs) ever detected—and pinpointed its location in a nearby galaxy (NGC 4141). FRB 20250316A has been nicknamed RBFLOAT, which stands for Radio […] Source

What is happening? The Green Bank Elementary and Middle School, located next to the Green Bank Observatory, will begin using WiFi in the school starting this year. The school—and the Observatory—are located in an area that is designated as a “Quiet Zone:” an area that limits interference caused by certain technology, like WiFi, to protect […] Source

The U.S. National Science Foundation Green Bank Observatory (NSF GBO) is entering a new era for the “Quiet Zone”— allowing the use of WiFi at the Green Bank Elementary and Middle School, which sits next door to the NSF Green Bank Telescope. The Observatory exists within two “Quiet Zones” that protect its scientific research: the […] Source

Breakthrough collaboration between multiple telescopes reveals most unusual long-period radio transient ever found Astronomers have made a groundbreaking discovery using some of the world’s most advanced radio telescopes. Researchers, led by Fengqiu Adam Dong, a Jansky Fellow at the NSF Green Bank Observatory (NSF GBO), have identified an exceptionally unusual cosmic object known as a […] Source

Newly discovered Midpoint cloud offers a rare glimpse into star formation and the dynamic flow of galactic material toward the Milky Way’s center An international team of astronomers has discovered a massive cloud of gas and dust located in a little-known region of our Milky Way galaxy. The Giant Molecular Cloud (GMC) is about 60 […] Source

We are updating the power distribution and cabling for 5 computing racks in our equipment room. The work will start on Wednesday July 16, 2025 at 8:30 am ET and continue until completed. Please note: For the duration of this work, /stor/gbtdata and /stor/pulsar will be unavailable on all GBO computing machines! During this work, […] Source

The Green Bank Observatory is in the process of expanding the storage capacity on one of our data storage machines. The work starts Monday, July 14 at 16:00 ET and will continue until all data is successfully restored. Data stored in the GBT Legacy Archive will be unavailable during this period. On Monday July 14, […] Source

Astronomers discover fragile hydrogen clouds surviving inside the superheated Fermi Bubbles, revealing the Milky Way’s most extreme outflows are younger and more complex than ever imagined A team of astronomers has made a surprising discovery using the U.S. National Science Foundation Green Bank Telescope (NSF GBT): eleven fast-moving clouds of cold, neutral hydrogen gas—akin to […] Source

The Massive and Distant Clusters of WISE Survey (MaDCoWS) is a catalog of >2000 massive galaxy clusters at z~1. The goal of this GBT observing program was to observe many of the most massive MaDCoWS clusters with MUSTANG2 in order to obtain a Sunyeav-Zeldovich Effect mass estimate. 26 MaDCoWS clusters were observed and the resulting […] Source

Discovery of seven-ring cyanocoronene in a star-forming cloud challenges assumptions about the abundance and formation of complex organic molecules in the universe A team of chemists and astronomers have made a groundbreaking discovery in the field of astrochemistry: the identification of cyanocoronene, the largest polycyclic aromatic hydrocarbon (PAH) ever detected in space. This molecule, composed […] Source

The U.S. National Science Foundation (NSF) has announced a new coordination agreement with AST SpaceMobile to address the impact of satellite constellations on ground-based astronomy, particularly focusing on radio astronomy facilities like the NSF National Radio Astronomy Observatory (NSF NRAO) and the NSF Green Bank Observatory (NSF GBO). The agreement builds on the longstanding partnership […] Source

Bar Ammonia Radiation in Filaments, Lanes, and YSOs Survey (BARFLYS) targets the NH3 (1,1) and (2,2) transitions across the entire Milky Way Galactic Bar Dust Lanes to identify regions of dense gas and examine their properties. Acknowledgement For publications that make use of these data please cite Butterfield et al. (2025, in press). Please also […] Source

Vital repainting project will extend lifespan of world’s largest fully steerable radio telescope The U.S. National Science Foundation Green Bank Observatory (NSF GBO) is embarking on a crucial maintenance project to protect the structural integrity of the NSF Green Bank Telescope (NSF GBT), the world’s largest fully steerable radio telescope. The NSF GBT has been […] Source

An international team of astronomers has made significant strides in understanding the mysterious jets emanating from supermassive black holes at the centers of galaxies. A new study, which observed 16 active galactic nuclei, focused on the jets of these incredibly luminous objects powered by supermassive black holes. Researchers were able to probe the innermost regions […] Source

Join us for a 5-day Astrobiology Workshop geared towards Middle and High School Science Teachers, to be held at the U.S. National Science Foundation Green Bank Observatory! June 29 – July 4, 2025 During this conference, teachers will: Every day, you will collaborate with other teachers, engage in scientific lectures, participate in fun hands-on activities, […] Source